Gas-pressure regulator.



y L. A. MERK. GAS PRESSURE REGULATOR. APPLIOATIOE EILED MAY 31, 1907.

977,82() Patented Dec. 6, 1916.

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wwmzsszs. mvENTn. M Gja/uk- LAWRENCE A. MERK, OF WILKINSBURG,PENNSYLVANIA,

ASSIGNQR F 0NE-HALF T EDWIN RUUD, or PLTTSBURG, PENNSYLVANIA.

GAS-PRESSURE REGULATOR.-

Specification of Letters-Patent. I

Patented nee. e, 1am

Application filed May\31, 1907. Serial No. 376,475.

To all whom it may concern:

Be it known that I, LAWRENCE A; Mami,

a resident of Wilkinsburg,`in the county'of Allegheny and State ofPennsylvania, have 5 in vented certain new and useful Improvements inGas-Pressure Regulators, of which the following is aspecication.

. This invention relates to that type of gas pressure regulatorscommonly used with gas engines wherein the suction of the chargingstroke automatically lp'ens a gas inlet valve,

with means for holding the valve normally closed.

.The primary object is to provide a valve ing the valve7 its mostfrequent removal being A -for the purpose of cleanin the regulator or -vthe valve itself. As is wel known, producer gas contains manyimpurities, both liquid and solid, and when such gas is used frequent pcleaning of the regulator-is inecessary. lVith V the structure hereinproposed, the valve may be readily removed without 4disturbing thediaphragm, thus greatly simplifying the cleaning operation.

ln the accompanying drawings, Figure -1 is a vertical sectional view ofa regulator constructed in accordancev with theinvention, and Fig. 2 isa similar View of a portion of the same, showing the vadmission valveeinen.

Referring to the drawings, the regulator casing 2 1s of shell-like form,with the openA top ot' its main or suction/chamber 3 closed by diaphragm4 and the casinr cover or top 5. Chamber 8 connects at 6 wlth the engineor other apparatus supplied through the regulator. The central lowerportion of casing 2 is partitioned to form the annular inlet chamber 7,to which extends the gas inlet passage 8, said chamber being open at itstop at `9 for. 'the passage vof voas into chamber 3. The bottom of saidchamber is open at 10 to communicate with vthe depending settlingchamber 11, and the under faces of the walls of openings 9 and 10 formseats the downwardly and carries th'c central guide 15 for stem 13. l55

Beneath this guide the stem is engaged by spring 16 supported by thespider-like extension 17 of bottom 14, with screw 18 for regulating thetension of vthe spring and the consequent resistance of valve 12 tolowering and opening.

Carried by diaphragm 4 is depending stem 19 which moves in the xed guide20.

arranged centrally above valve 12, with the` lower extremity of stem 19adapted to bear upon the upper extremity of valve-stem 13. Stem 19isextended 'ingtop 5, as indicated at 19, and a central balancing spring21 may be arranged above 'the diaphragm which may operate in connectionwith spring 16 for adjustingthe tension of the valveV to thepressure'required to open it, as will be un-` dei-stood.l The drain oroutlet Q2 ot chamber 11 may be looped as shown to provide a water seal.

The operation will be apparent. The suction created in chamber 3 by thecharging stroke of the engine will cause lthe diaphragm to lower underatmospheric pressure and the pressure of stem 19 will open the valveand` admit the required amount of gas, the diaphragm raisino and thevalve closing when the charge-has entered. To remove the valve forcleaning it or the regulator casing, it is only necessary to detachbottom 111- of valvel may be withdrawn and ready access had to theinterior of theregu'lator. The diaphragm remains inplace and is in nowise disturbed when the valve is thus removed.

. I claim zl A gas regulatora comprising a casing hav# lng a suctionchamber provided with a double seated lgas inlet, a tubularbalaneedvalve for the inlet whereby the gas entering through one of the valveseats passes diupwardly through casi facilitating and the settlingchamberl and the 'g l i 77.820

rectly to the suction chamber and that entering through the other seatpasses to the suction chamber through the`va1ve,` a chaf phragm withinvthe suction chamber .and

5 operatively connected to the Valve/fr .o n-

ing the same, and spring means for hol ixig the valve normally closed.-1

In testimony whereof I afiJ-i my Signature in presence of twoWitnesses.l

y' i LAWRENCE/1e.. MERK. Witnesses: l

`J. M. Nnsrr,

D. 4E. MITCHELL.

